<?php

class ZFKiller_Form_Element_Primarykey extends ZFKiller_Form_Element_Hidden {

	public function __construct($spec, $options = null) {
		parent::__construct($spec, $options);

		$this->addFilter(new Zend_Filter_Int())
				->addFilter(new Zend_Filter_Callback('abs'))
				->addFilter(new Zend_Filter_Null());
	}

}